* Download the original firmware from TP-Link'​s site (IMPORTANT: Download a firmware which has does not contain the word //boot// in it's filename (such as wr741nv1_en_3_9_18_up_boot(100104).bin),​ extract the file and rename it to something short and simple such as ''​tplink.bin''​.

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* Upload it to ''/​tmp''​-directory on your router and execute:<​code>​

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mtd -r write /​tmp/​tplink.bin firmware

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</​code>​

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* Be careful, if you were hit by the "​missing web interface"​ problem described above, you will be probably see the same issue when flashing back to OEM and the box will lack in telnet or ssh, too, so no way to get out without hardware intervention.

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===== Failsafe mode =====

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[[doc:​howto:​generic.failsafe]]

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- When the SYS led (under gear icon) starts to blink push the QSS button for around 5-10 sec. Now the led should blink a lot faster than before.

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===== Debricking =====

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V 7.2 July 2012

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- Disconnect the router from the internet, connect it with a PC via RJ45 cable and perform a 30/30/30 restart

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- Change the ip on the PC to 192.168.1.**2**,​ subnet mask must be 255.255.255.0 and restart the router by unplugging the power cable

* Kill the broken OWRT firmware<​code>​mtd -r erase rootfs_data</​code>​enter<​code>​firstboot</​code>​enter<​code>​reboot -f</​code>​After rebooting log in again just to check if the router is accessable. If you cant start again at the beginning.

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Now change the network settings on the PC back to "​Aquire IP adress automatically"​ and connect the router with the internet. Do a manual reboot by simply turning it off and back on again. The PC should now get an ip adress by DHCP. If this is the case you successfully resetted the router. If not repeat from the beginning or [[https://​forum.openwrt.org/​viewtopic.php?​id=33906|do this]] if you like.

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Basically the router now works like after the initial flash to OWRT. Now you have to [[:​doc:​howto:​basic.config|configure the internet connection]] and probably you want to install [[:​doc:​howto:​luci.essentials|LUCI]]. After that open your browser, connect to 192.168.1.1 and log in with the data you entered via telnet.

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''​V8.X note''​

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Debricking see the above, but you will have to plug your cable to WAN port in failsafe to be able to telnet 192.168.1.1.

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===== Basic configuration =====

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[[doc:​howto:​configuration]]

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==== Wifi on/off toggle by QSS button ====

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Read [[doc:​howto:​hardware.button|this howto]] to use buttons on TP-Link ​

Another user notes: My TP-LINK WR841ND V7.2 has a VCC of +3.3V and like the TL-MR3420 [[:​toh:​tp-link/​tl-mr3420#​serial]] needed to connect a 10k pullup resistor between the TX and the 3.3V pin to get reliable serial.

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Yet another user notes: My TP-Link WR841ND V7.1 also requires the 10k pullup resistor between TX and the 3.3V pin. Without the resistor I just get garbage when I type, but can see some console output. ​